Katherine L. Williams, M.D.
NPI 1851363550ActiveIndividual· Specialist· Covington, LA
Specialist (M.D.) in Covington, Louisiana, trained at Louisiana State University School of Medicine in New Orleans (class of 1994). Their prescriptions cost Medicare Part D more than their services did: $19,990 for 241 claims, against $6,916 paid for services in 2024. Intuitive Surgical, Inc. was the largest of 15 companies reporting payments in 2025, $957.67 in all, mostly food and beverage.
Overview
| NPI | 1851363550 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Feb 6, 2006 |
| Last updated in NPPES | Jul 20, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 022401 | LA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Obstetrics/Gynecology (LA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 46 |
|---|---|
| Services billed | 116 across 21 procedure codes |
| Paid by Medicare | $6,916 |
Part D prescriptions in 2024
| Prescriptions (claims) | 241 · 401 30-day fills |
|---|---|
| Patients | 58 |
| Total drug cost | $19,990 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Louisiana State University School of Medicine in New Orleans |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Katherine L. Williams, MD APMCCovington, LA · 5 clinicians
Hospital affiliation
- St Tammany Parish HospitalCovington, LA
Industry payments (Open Payments)
- 2025$957.67 · 53 payments from 15 companies
- 2024$657.52 · 40 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $212.93 | 3 |
| Millicent US Inc | $195.15 | 17 |
| Amgen Inc. | $154.81 | 9 |
| Astellas Pharma US Inc | $61.79 | 3 |
| Novo Nordisk Inc | $46.58 | 3 |
What the 2025 payments were for
- Food and Beverage$744.74 · 50 payments
- Travel and Lodging$212.93 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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